Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Aug. 26, 2023	Aug. 27, 2022	Aug. 28, 2021
Earnings Per Share [Abstract]
Net income	$ 215.9	$ 390.6	$ 281.9
Weighted average common shares outstanding (in shares)	30.3	32.5	33.5
Basic earnings per common share (in dollars per share)	$ 7.12	$ 12.03	$ 8.41
Interest expense on convertible notes, net of tax	$ 4.7	$ 0.0	$ 0.0
Diluted net income	$ 220.6	$ 390.6	$ 281.9
Dilutive impact of stock compensation awards (in shares)	0.3	0.5	0.4
Dilutive impact of convertible notes (in shares)	4.8	0.0	0.2
Weighted average common shares outstanding, assuming dilution (in shares)	35.4	33.0	34.1
Anti-dilutive securities excluded from weighted average diluted common shares outstanding (in shares)	0.1	0.2	0.0
Diluted earnings per common share (in dollars per share)	$ 6.23	$ 11.84	$ 8.28